11. Stock-Based Compensation

On August 5, 2003, the Company established a stock option plan (the “Plan”).  Under the Plan, the Company grants stock options to key employees, directors and consultants of the Company.  For all grants prior to September 12, 2005 and grants to employees of the Company after September 12, 2005, the vesting period is 30% on the first anniversary of the grant date, an additional 30% on the second anniversary and the remaining 40% on the third anniversary.  Options expire between five and ten years from the date of grant.

For grants to non-employee consultants of the Company after September 12, 2005, the vesting period is between one to three years, subject to the fulfillment of certain conditions in the individual stock option grant agreements, or 100% upon the occurrence of certain events specified in the individual stock option grant agreements.  Options authorized for issuance under the Plan total 17,000,000 after giving effect to an amendment to the Plan approved at the Annual Meeting of the Stockholders of the Company on June 2, 2006.  At December 31, 2012, 8,578,000 shares of common stock were available for issuance.

Prior to adoption of the Plan, the Company made restricted stock grants.  During 2003 all existing restricted stock grants were converted to stock options.  The converted options maintained the same full vesting period as the original restricted stock grants.

Accounting for Employee Awards

The Company’s results of operations for the years ended December 31, 2012 and 2011 include share-based employee compensation expense totaling $202,037 and $597,637 respectively.   Such amounts have been included in the statement of operations in general and administrative and research and development expenses.  No income tax benefit has been recognized in the statement of operations for share-based compensation arrangements as the Company has provided for a 100% valuation allowance on its deferred tax assets.

Employee stock option compensation expense is the estimated fair value of options granted amortized on a straight-line basis over the requisite vesting service period for the entire portion of the award.

Accounting for Non-Employee Awards

Stock compensation expenses related to non-employee options were $28,950 and $40,970 for the years ended December 31, 2012 and 2011, respectively.  Such amounts have been included in the statement of operations in general and administrative and research and development expenses.

 

 

Summary of Stock Compensation Expense Recognized

Total stock-based compensation recognized by the Company in the years ended December 31, 2012 and 2011, and the period from inception (March 19, 2001) to December 31, 2012 is as follows:

 

 

Summary of Stock Option Transactions

There were 170,000 stock options granted at an exercise price of $0.38 with a fair value of $47,589 and 75,000 stock options granted at an exercise price of $0.48 with a fair value of $26,835 during the year ended December 31, 2012.  There were 130,000 stock options granted at an exercise price of $1.84 and a fair value of $180,326,  100,000 stock options granted at an exercise price of $1.25 and a fair value of $91,334,  20,000 stock options granted at an exercise price of $1.22 and a fair value of $17,915, 150,000 stock options granted at an exercise price of $1.12 and a fair value of $121,595, and 50,000 stock options granted at an exercise price of $0.38 and a fair value of $14,150 during the year ended December 31, 2011.

The fair value of options at the date of grant was estimated using the Black-Scholes option pricing model.  The Company took into consideration guidance under ASC 718, “Compensation-Stock Compensation” and SAB 107 when reviewing and updating assumptions.  The expected volatility is based upon historical volatility of the Company’s stock.  The expected term is based upon the simplified method as allowed under SAB 107.

 

 

The assumptions made in calculating the fair values of options are as follows:

 

The following table summarizes the employee and non-employee share-based transactions:

 

 

The following table summarizes information about stock options outstanding as of December 31, 2012 and December 31, 2011.

 

 

The total intrinsic value of the options exercised was $163,450 for year ended December 31, 2011.  There were no options exercised during the year ended December 31, 2012.  The weighted average fair value of the options vested was $0.92 and $0.70 for the year ended December 31, 2012 and 2011, respectively.

A summary of the Company’s unvested shares as of December 31, 2012 and changes during the year ended December 31, 2012 is presented below:

 

As of December 31, 2012 and 2011, there was $172,532 and $397,593 of total unrecognized compensation cost, respectively, related to all unvested stock options, which is expected to be recognized over a weighted average vesting period of 1.0 years and 1.6 years, respectively.